RN
Ratings - TITLES to be used after the introduction of the Fleet Chief Petty
Officer in 1970

When the new rate of Fleet Chief Petty
Officer was first introduced in 1970 and launched a little later, known today as
a Warrant Officer, it created 41 new titles for HMS Centurion's [drafty's]
computer files. Every branch in the Navy had the Fleet Chief rate except
for Artisan's and Sailmaker's whose highest rate remained a Chief Petty
Officer. However, Centurion had no fewer than 325 separate male
rating titles, all of which had to be processed for schemes of complement,
complement returns, nominal lists, regulations and mobilisation requirements. I
have listed below every one of them as they appeared at that time in the
published DCI.

Many of them have now disappeared and have
been replaced by titles reflecting modern Naval practices, training and
deployment. The list also included 26 Royal Marine other rank titles, 17
fighting Marine titles and 9 Marine bandsmen titles.

WRNS were not included as they were not
then part of the Royal Navy.

BRANCH

RATING

ABBREVIATION

Seaman

Fleet Chief Petty Officer

FCPO

Chief Petty Officer

CPO

Petty Officer

PO

Leading Seaman

LS

Able Seaman

AB

Ordinary Seaman

ORD

Junior Seaman 1st class [0]

JS1[O]

Junior Seaman 1st class [U]

JS1[U]

Junior Seaman 2nd class

JS2

Sailmaker

Chief Sailmaker

CSLMR

Communication

Fleet Chief Communications Yeoman

FCCY

Chief Communications Yeoman

CCY

Communications Yeoman

CY

Leading Radio Operator [T]

LRO[T]

Radio Operator [T] 1st class

RO1[T]

Radio Operator [T] 2nd class

RO2[T]

Fleet Chief Radio Supervisor

FCRS

Chief Radio Supervisor

CRS

Radio Supervisor

RS

Leading Radio Operator [G]

LRO[G]

Radio Operator [G] 1st class

RO1[G]

Radio Operator [G] 2nd class

RO2[G]

Fleet Chief Radio Supervisor [W]

FCRS[W]

Chief Radio Supervisor [W]

CRS[W]

Radio Supervisor [W]

RS[W]

Leading Radio Operator [W]

LRO[W]

Radio Operator [W] 1st class

RO1[W]

Radio Operator [W] 2nd class

RO2[W]

Radio Operator 3rd class

RO3

Junior Radio Operator 1st class

JRO1

Junior Radio Operator 2nd class

JRO2

Fleet Chief Radio Supervisor [Special]

FCRS[S]

Chief Radio Supervisor [Special]

CRS[S]

Radio Supervisor [Special]

RS[S]

Leading Radio Operator [Special]

LRO[S]

Marine Engineering Artificer [H]

Fleet Chief Marine Engineering Artificer [H]

FCMEA[H]

Chief Marine Engineering Artificer [H]

CMEA[H]

Marine Engineering Artificer 1st class [H]

MEA1[H]

Marine Engineering Artificer 2nd class [H]

MEA2[H]

Marine Engineering Artificer Acting 2nd class [H]

AMEA2[H]

Marine Engineering Artificer 3rd class [H]

MEA3[H]

Marine Engineering Artificer Apprentice [H]

MEA APP[H]

Artificer Apprentice

ART APP

Marine Engineering Artificer [P]

Fleet Chief Marine Engineering Artificer [P]

FCMEA[P]

Chief Marine Engineering Artificer [P]

CMEA[P]

Marine Engineering Artificer 1st class [P]

MEA1[P]

Marine Engineering Artificer 2nd class [P]

MEA2[P]

Acting Marine Engineering Artificer 2nd class [P]

AMEA2[P]

Marine Engineering Artificer 3rd class [P]

MEA3[P]

Marine Engineering Artificer Apprentice [P]

MEA APP[P]

Artificer Apprentice

ART APP

Mechanician

Fleet Chief Mechanician

FCMECH

Chief Mechanician

CMECH

Mechanician 1st class

MECH1

Mechanician 2nd class

MECH2

Mechanician 3rd class

MECH3

Engineering Mechanic

Fleet Chief Engineering Mechanic

FCM[E]

Chief Engineering Mechanic

CM[E]

Petty Officer Engineering Mechanic

POM[E]

Leading Engineering Mechanic

LM[E]

Engineering Mechanic 1st class

M[E]1

Engineering Mechanic 2nd class

M[E]2

Junior Engineering Mechanic 1st class

JM[E]1

Junior Engineering Mechanic 2nd class

JM[E]2

Artisan

Chief Blacksmith

CBLK

Chief Joiner

CJNR

Chief Painter

CPTR

Chief Plumber

CPLMB

Ordnance Electrical Artificer

Fleet Chief Ordnance Electrical Artificer

FCOEA

Chief Ordnance Electrical Artificer

COEA

Acting Chief Ordnance Electrical Artificer

ACOEA

Ordnance Electrical Artificer 1st class

0EA1

Ordnance Electrical Artificer 2nd class

OEA2

Acting Ordnance Electrical Artificer 2nd class

AOEA2

Ordnance Electrical Artificer 3rd class

OEA3

Ordnance Electrical Artificer Apprentice

OEA APP

Artificer Apprentice

ART APP

Ordnance Electrical Mechanician

Fleet Chief Ordnance Electrical Mechanician

FCOEMN

Chief Ordnance Electrical Mechanician

COEMN

Acting Chief Ordnance Electrical Mechanician

ACOEMN

Ordnance Electrical Mechanician 1st class

OEMN1

Ordnance Electrical Mechanician 2nd class

OEMN2

Ordnance Electrical Mechanician 3rd class

OEMN3

Ordnance Electrical Mechanician 4th class

OEMN4

Acting Ordnance Electrical Mechanician 4th class

AOEMN4

Ordnance Electrical Mechanician Apprentice

OEMN APP

Ordnance Electrical Mechanic

Fleet Chief Ordnance Electrician

FCOEL

Chief Ordnance Electrician

COEL

Petty Officer Ordnance Electrician

POOEL

Acting Petty Officer Ordnance Electrician

APOOEL

Leading Ordnance Electrical Mechanic

LOEM

Acting Leading Ordnance Electrical Mechanic

ALOEM

Ordnance Electrical Mechanic 1st class

OEM1

Ordnance Electrical Mechanic 2nd class

OEM2

Junior Ordnance Electrical Mechanic 1st class

JOEM1

Junior Ordnance Electrical Mechanic 2nd class

JOEM2

Control Electrical Artificer

Fleet Chief Control Electrical Artificer

FCCEA

Chief Control Electrical Artificer

CCEA

Acting Chief Control Electrical Artificer

ACCEA

Control Electrical Artificer 1st class

CEA1

Control Electrical Artificer 2nd class

CEA2

Acting Control Electrical Artificer 2nd class

ACEA2

Control Electrical Artificer 3rd class

CEA3

Control Electrical Artificer Apprentice

CEA APP

Artificer Apprentice

ART APP

Control Electrical Mechanician

Fleet Chief Control Electrical Mechanician

FCCEMN

Chief Control Electrical Mechanician

CCEMN

Acting Chief Control Electrical Mechanician

ACCEMN

Control Electrical Mechanician 1st class

CEMN1

Control Electrical Mechanician 2nd class

CEMN2

Control Electrical Mechanician 3rd class

CEMN3

Control Electrical Mechanician 4th class

CEMN4

Acting Control Electrical Mechanician 4th class

ACEMN4

Control Electrical Mechanician Apprentice

CEMN APP

Control Electrical Mechanic

Fleet Chief Control Electrician

FCCEL

Chief Control Electrician

CCEL

Petty Officer Control Electrician

POCEL

Acting Petty Officer Control Electrician

APOCEL

Leading Control Electrical Mechanic

LCEM

Acting Leading Control Electrical Mechanic

ALCEM

Control Electrical Mechanic 1st class

CEM1

Control Electrical Mechanic 2nd class

CEM2

Junior Control Electrical Mechanic 1st class

JCEM1

Junior Control Electrical Mechanic 2nd class

JCEM2

Radio Electrical Artificer

Fleet Chief Radio Electrical Artificer

FCREA

Chief Radio Electrical Artificer

CREA

Acting Chief Radio Electrical Artificer

ACREA

Radio Electrical Artificer 1st class

REA1

Radio Electrical Artificer 2nd class

REA2

Acting Radio Electrical Artificer 2nd class

AREA2

Radio Electrical Artificer 3rd class

REA3

Radio Electrical Artificer Apprentice

REA APP

Artificer Apprentice

ART APP

Radio Electrical Mechanician

Fleet Chief Radio Electrical Mechanician

FCREMN

Chief Radio Electrical Mechanician

CREMN

Acting Chief Radio Electrical Mechanician

ACREMN

Radio Electrical Mechanician 1st class

REMN1

Radio Electrical Mechanician 2nd class

REMN2

Radio Electrical Mechanician 3rd class

REMN3

Radio Electrical Mechanician 4th class

REMN4

Acting Radio Electrical Mechanician 4th class

AREMN4

Radio Electrical Mechanician Apprentice

REMN APP

Radio Electrical Mechanic

Fleet Chief Radio Electrician

FCREL

Chief Radio Electrician

CREL

Petty Officer Radio Electrician

POREL

Acting Petty Officer Radio Electrician

APOREL

Leading Radio Electrical Mechanic

LREM

Acting Leading Radio Electrical Mechanic

ALREM

Radio Electrical Mechanic 1st class

REM1

Radio Electrical Mechanic 2nd class

REM2

Junior Radio Electrical Mechanic 1st class

JREM1

Junior Radio Electrical Mechanic 2nd class

JREM2

Aircraft Artificer

Fleet Chief Aircraft Artificer [AE]

FCAA[AE]

Chief Aircraft Artificer [AE]

CAA[AE]

Aircraft Artificer [AE] 1st class

AA[AE]1

Aircraft Artificer [AE] 2nd class

AA[AE]2

Acting Aircraft Artificer [AE] 2nd class

AAA[AE]2

Aircraft Artificer [AE] 3rd class

AA[AE]3

Aircraft Artificer

ART APP

Fleet Chief Aircraft Artificer [O]

FCAA[O]

Chief Aircraft Artificer [O]

CAA[O]

Aircraft Artificer [O] 1st class

AA[O]1

Aircraft Artificer [O] 2nd class

AA[O]2

Fleet Chief Aircraft Mechanician [O]

FCAMN[O]

Chief Aircraft Mechanician [O]

CAMN[O]

Aircraft Mechanician [O] 1st class

AMN[O]1

Aircraft Mechanician [O] 2nd class

AMN[O]2

Aircraft Mechanician [O] 3rd class

AMN[O]3

Aircraft Mechanician

Fleet Chief Aircraft Mechanician [AE]

FCAMN[AE]

Chief Aircraft Mechanician [AE]

CAMN[AE]

Aircraft Mechanician [AE] 1st class

AMN[AE]1

Aircraft Mechanician [AE] 2nd class

AMN[AE]2

Aircraft Mechanician [AE] 3rd class

AMN[AE]3

Naval Air Mechanic

Fleet Chief Air Fitter [AE]

FCAF[AE]

Chief Air Fitter [AE]

CAF[AE]

Chief Air Fitter [ex-Chief SAM]

CAF[SAM]

Petty Officer Air Fitter

POAF[AE]

Acting Petty Officer Air Mechanic [AE]

APOAM[AE]

Petty Officer Air Fitter [ex-SAM] 1st or 2nd class

POAF[SAM]

Leading Air Mechanic [AE]

LAM[AE]

Naval Air Mechanic [AE] 1st class

NAM[AE]1

Naval Air Mechanic [AE] 2nd class

NAM[AE]2

Junior Naval Air Mechanic [AE] 1st class

JNAM[AE]1

Junior Naval Air Mechanic [AE] 2nd class

JNAM[AE]2

Fleet Chief Air Fitter [O]

FCAF[O]

Chief Air Fitter [O]

CAF[O]

Petty Officer Air Fitter [O]

POAF[O]

Leading Air Mechanic [O]

LAM[O]

Naval Air Mechanic [O] 1st class

NAM[O]1

Naval Air Mechanic [O] 2nd class

NAM[O]2

Junior Naval Air Mechanic [O] 1st class

JNAM[O]1

Junior Naval Air Mechanic [O] 2nd class

JNAM[O]2

Naval Airman

Fleet Chief Airman

FCA

Chief Airman

CA

Petty Officer Airman

POA

Leading Airman

LA

Naval Airman 1st class

NA1

Naval Airman 2nd class

NA2

Junior Naval Airman 1st class

JNA1

Junior Naval Airman 2nd class

JNA2

Electrical Artificer [Air]

Fleet Chief Electrical Artificer [Air]

FCEA[A]

Chief Electrical Artificer [Air]

CEA[A]

Electrical Artificer [Air] 1st class

EA[A]1

Electrical Artificer [Air] 2nd class

EA[A]2

Acting Electrical Artificer [Air] 2nd class

AEA[A]2

Electrical Artificer [Air] 3rd class

EA[A]3

Electrical Artificer [Air] Apprentice

EA[A]APP

Artificer Apprentice

ART APP

Electrical Mechanician [Air]

Fleet Chief Electrical Mechanician [Air]

FCELMN[A]

Chief Electrical Mechanician [Air]

CELMN[A]

Electrical Mechanician [Air] 1st class

ELMN[A]1

Electrical Mechanician [Air] 2nd class

ELMN[A]2

Electrical Mechanician [Air] 3rd class

ELMN[A]3

Electrical Mechanician [Air] 4th class

ELMN[A]4

Acting Electrical Mechanician [Air] 4th class

AELMN[A]4

Electrical Mechanician [Air] 5th class

ELMN[A]5

Electrical Mechanician [Air] Apprentice

ELMN[A] APP

Electrical Mechanic [Air]

Fleet Chief Electrician [Air]

FCEL[A]

Chief Electrician [Air]

CEL[A]

Petty Officer Electrician [Air]

POEL[A]

Leading Electrical Mechanic [Air]

LEM[A]

Electrical Mechanic [Air] 1st class

EM[A]1

Electrical Mechanic [Air] 2nd class

EM[A]2

Junior Electrical Mechanic [Air] 1st class

JEM[A]1

Junior Electrical Mechanic [Air] 2nd class

JEM[A]2

Radio Electrical Artificer [Air]

Fleet Chief Radio Electrical Artificer [Air]

FCREA[A]

Chief Radio Electrical Artificer [Air]

CREA[A]

Radio Electrical Artificer [Air] 1st class

REA[A]1

Radio Electrical Artificer [Air] 2nd class

REA[A]2

Acting Radio Electrical Artificer [Air] 2nd class

AREA[A]2

Radio Electrical Artificer [Air] 3rd class

REA[A]3

Radio Electrical Artificer [Air] Apprentice

REA[A] APP

Artificer Apprentice

ART APP

Radio Electrical Mechanician [Air]

Fleet Chief Radio Electrical Mechanician [Air]

FCRELMN[A]

Chief Radio Electrical Mechanician [Air]

CRELMN[A]

Radio Electrical Mechanician [Air] 1st class

RELMN[A]1

Radio Electrical Mechanician [Air] 2nd class

RELMN[A]2

Radio Electrical Mechanician [Air] 3rd class

RELMN[A]3

Radio Electrical Mechanician [Air] 4th class

RELMN[A]4

Acting Radio Electrical Mechanician [Air] 4th class

ARELMN[A]4

Radio Electrical Mechanician [Air] 5th class

RELMN[A]5

Radio Electrical Mechanician [Air] Apprentice

RELMN[A] APP

Radio Electrical Mechanic [Air]

Fleet Chief Radio Electrician [Air]

FCREL[A]

Chief Radio Electrician [Air]

CREL[A]

Petty Officer Radio Electrician [Air]

POREL[A]

Leading Radio Electrical Mechanic [Air]

LREM[A]

Radio Electrical Mechanic [Air] 1st class

REM[A]1

Radio Electrical Mechanic [Air] 2nd class

REM[A]2

Junior Radio Electrical Mechanic [Air] 1st class

JREM[A]1

Junior Radio Electrical Mechanic [Air] 2nd class

JREM[A]2

Ordnance Electrical Mechanician [Air]

Fleet Chief Ordnance Electrical Mechanician [Air]

FCOELMN[A]

Chief Ordnance Electrical Mechanician [Air]

COELMN[A]

Ordnance Electrical Mechanician [Air] 1st class

OELMN[A]1

Ordnance Electrical Mechanician [Air] 2nd class

OELMN[A]2

Ordnance Electrical Mechanician [Air] 3rd class

OELMN[A]3

Ordnance Electrical Mechanician [Air] 4th class

OELMN[A]4

Acting Ordnance Electrical Mechanician [Air] 4th class

AOELMN[A]4

Ordnance Electrical Mechanician [Air] 5th class

OELMN[A]5

Ordnance Electrical Mechanician [Air] Apprentice

OELMN[A] APP

Ordnance Electrical Mechanic [Air]

Fleet Chief Ordnance Electrician [Air]

FCOEL[A]

Chief Ordnance Electrician [Air]

COEL[A]

Petty Officer Ordnance Electrician [Air]

POOEL[A]

Leading Ordnance Electrical Mechanic [Air]

LOEM[A]

Ordnance Electrical Mechanic [Air] 1st class

OEM[A]1

Ordnance Electrical Mechanic [Air] 2nd class

OEM[A]2

Junior Ordnance Electrical Mechanic [Air] 1st class

JOEM[A]1

Junior Ordnance Electrical Mechanic [Air] 2nd class

JOEM[A]2

Medical Branch - Medical Technician

Fleet Chief Medical Technician

FCMT

Chief Medical Technician

CMT

Medical Technician 1st class

MT1

Medical Technician 2nd class

MT2

Medical Technician 3rd class [ex-PMTs and JPMTs]

MT3

Medical Technician 3rd class [ex-Medical Assistants]

MT3

Medical Technician 4th class [ex-PMTs and JPMTs]

MT4

Medical Technician 4th class [ex-Medical Assistants]

MT4

Medical Technician Acting 4th class [ex-PMTs and JPMTs]

MTA4

Medical Technician 5th class and Acting 4th class [Direct
Entry]

MT5

Medical Technician 5th class

MT5

Medical Branch - Medical Assistant

Fleet Chief Medical Assistant

FCMA

Chief Petty Officer Medical Assistant

CPOMA

Petty Officer Medical Assistant

POMA

Leading Medical Assistant

LMA

Medical Assistant

MA

Probationary Medical Assistant

PMA

Junior Medical Assistant 1st class

JMA1

Junior Medical Assistant 2nd class

JMA2

Supply and Secretariat Branch -
Writer

Fleet Chief Writer

FCWTR

Chief Petty Officer Writer

CPOWTR

Petty Officer Writer

POWTR

Leading Writer

LWTR

Writer

WTR

Assistant Writer

AWTR

Junior Assistant Writer 1st class

JAWTR1

Junior Assistant Writer 2nd class

JAWTR2

Supply and Secretariat Branch -
Caterer

Fleet Chief Caterer

FCCA

Chief Petty Officer Caterer

CPOCA

Petty Officer Caterer

POCA

Supply and Secretariat Branch -
Stores Accountant

Fleet Chief Stores Accountant

FCSA

Chief Petty Officer Stores Accountant

CPOSA

Petty Officer Stores Accountant

POSA

Leading Stores Accountant

LSA

Stores Accountant

SA

Assistant Stores Accountant

ASA

Junior Assistant Stores Accountant 1st class

JASA1

Junior Assistant Stores Accountant 2nd class

JASA2

Supply and Secretariat Branch -
Steward

Fleet Chief Steward

FCSTD

Chief Petty Officer Steward

CPOSTD

Petty Officer Steward

POSTD

Leading Steward

LSTD

Steward

STD

Assistant Steward

ASTD

Junior Assistant Steward 1st class

JASTD1

Junior Assistant Steward 2nd class

JASTD2

Supply and Secretariat Branch -
Cook

Fleet Chief Cook

FCCK

Chief Petty Officer Cook

CPOCK

Petty Officer Cook

POCK

Leading Cook

LCK

Cook

CK

Assistant Cook

ACK

Junior Assistant Cook 1st class

JACK1

Junior Assistant Cook 2nd class

JACK2

Regulating

Fleet Master-at-Arms

FMAA

Master-at-Arms

MAA

Regulating Petty Officer

RPO

Leading Regulator

LREG

Specialist Qualifications and Trades - Qualifications

Gunnery Instructor

GI

Quarters Rating [Armourer] 1st class

QR1[A]

Quarters Rating [Armourer] 2nd class

QR2[A]

Quarters Rating 1st class

QR1

Quarters Rating 2nd class

QR2

Seaman Gunner Star

SG*

Seaman Gunner

SG

Gunlayer [Armourer] 1st class

GL1[A]

Gunlayer [Armourer] 2nd class

GL2[A]

Gunlayer 1st class

GL1

Gunlayer 2nd class

GL2

Fire Control Rating 1st class

FC1

Fire Control Rating 2nd class

FC2

Underwater Weapon Rating 1st class

UW1

Underwater Armourer 1st class

UW1[A]

Underwater Weapon Rating 2nd class

UW2

Underwater Armourer 2nd class

UW2[A]

Underwater Weapon Rating Star

UW*

Underwater Weapon Rating

UW

Plotting and Radar Instructor

PRI

Radar Plot Rating 1st class

RP1

Radar Plot Rating 2nd class

RP2

Radar Plot Rating Star

RP*

Radar Plot Rating

RP

Torpedo Anti-Submarine Instructor

TASI

Underwater Control Rating 1st class

UC1

Underwater Control Rating 2nd class

UC2

Underwater Control Rating Star

UC*

Underwater Control Rating

UC

Radio Communication Branch Instructor

RCI

Tactical Communications Branch Instructor

TCI

Electronic Warfare Communication Branch Instructor

EWI

Coxswain

COXN

Surveying Recorder 1st class

SR1

Surveying Recorder 2nd class

SR2

Surveying Recorder Star

SR*

Staff Physical Training Instructor

SPTI

Physical Trainer 1st class

PT1

Physical Trainer 2nd class

PT2

Clearance Diving Instructor

CDI

Clearance Diver 1st class

CD1

Clearance Diver 2nd class

CD2

Clearance Diver Star

CD*

Obsolescent Qualifications

Boom Trained 1st class

BT1

Boom Trained 2nd class

BT2

Boom Trained Star

BT*

Royal Marines - Note: In the case of ranks of the
Technical Branch a suffix is to be added to rank title as follows. Clerk
[C] Cook [K] Signaller [S] Driver [D] Tradesman [other than Driver] [T]